package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.itheima.constant.MessageConstant;
import com.itheima.dao.MemberDao;
import com.itheima.dao.OrderDao;
import com.itheima.dao.OrderSettingDao;
import com.itheima.entity.Result;
import com.itheima.pojo.Member;
import com.itheima.pojo.Order;
import com.itheima.pojo.OrderSetting;
import com.itheima.service.OrderService;
import com.itheima.utils.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;
import java.util.Map;


/**
 * 体检预约服务
 */
@Service(interfaceClass = OrderService.class)
@Transactional
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderSettingDao orderSettingDao;  // 预约设置

    @Autowired
    private MemberDao memberDao;  // 会员

    @Autowired
    private OrderDao orderDao;  // 预约订单


    // 根据id查询预约信息，包括套餐信息和会员信息
    @Override
    public Map findById(Integer id) throws Exception {
        Map map = orderDao.findById4Detail(id);
        if (map != null){
            // 处理日期格式
            Date orderDate = (Date) map.get("orderDate");
            String dateStr = DateUtils.parseDate2String(orderDate);
            map.put("orderDate",dateStr);
        }
        return map;
    }

    // 体检预约
    @Override
    public Result order(Map map) throws Exception {
        // 检查当前日期是否进行了预约设置,如果设置则无法进行预约
        String orderDate = (String) map.get("orderDate");
        Date date = DateUtils.parseString2Date(orderDate);// String-> Date
        OrderSetting orderSetting = orderSettingDao.findByOrderDate(date);
        if (orderSetting == null){
            // 存在，预约失败
            return new Result(false, MessageConstant.SELECTED_DATE_CANNOT_ORDER);
        }

        // 检查预约日期是否已经预约满了
        int number = orderSetting.getNumber();  // 可预约总人数
        int reservations = orderSetting.getReservations();  // 已预约人数
        if(reservations >= number) {  // 预约数大于或等于总预约数
            // 预约已满，不能预约
            return new Result(false,MessageConstant.ORDER_FULL);
        }

        // 检查当前用户是否为会员，根据手机号判断
        String telephone = (String) map.get("telephone");
        Member member = memberDao.findByTelephone(telephone);
        // 防止重复预约（会员id\时间\日期来判断）
        if (member != null){
            Integer memberId = member.getId();
            int setmealId = Integer.parseInt((String)map.get("setmealId"));
            Order order = new Order(memberId,date,null,null,setmealId);
            List<Order> list = orderDao.findByCondition(order);
            if (list != null && list.size() > 0){
                // 已经完成预约，不能重复预约
                return new Result(false,MessageConstant.HAS_ORDERED);
            }
        }

        // 以上条件都满足，可以预约，设置预约人数+1
        orderSetting.setReservations(orderSetting.getReservations()+1);
        orderSettingDao.editReservationsByOrderDate(orderSetting);

        // 用户非会员，预约时自动添加到会员列表
        if (member == null){
            // 当前用户不是会员
            member = new Member();
            member.setName((String)map.get("name"));
            member.setPhoneNumber(telephone);
            member.setIdCard((String)map.get("idCard"));
            member.setSex((String) map.get("sex"));
            member.setRegTime(new Date());
            memberDao.add(member);
        }
        //保存预约信息到预约表
        Order order = new Order(member.getId(),
                date,
                (String)map.get("orderType"),
                Order.ORDERSTATUS_NO,
                Integer.parseInt((String)
                        map.get("setmealId")));
        orderDao.add(order);
        return new Result(true,MessageConstant.ORDER_SUCCESS,order.getId());

        }
}

